在表面活性离子液体水溶液中形成的盐诱导粘弹性蠕虫状胶束。

Salt-induced viscoelastic wormlike micelles formed in surface active ionic liquid aqueous solution.

作者信息

Dong Bin, Zhang Jin, Zheng Liqiang, Wang Suqing, Li Xinwei, Inoue Tohru

机构信息

Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, PR China.

出版信息

J Colloid Interface Sci. 2008 Mar 1;319(1):338-43. doi: 10.1016/j.jcis.2007.11.040. Epub 2007 Nov 29.

DOI:10.1016/j.jcis.2007.11.040

PMID:18076899

Abstract

The growth and structure of the aqueous micellar solutions of a surface active ionic liquid, 1-hexadecyl-3-methylimidazolium bromide (C16mimBr), in the presence of an organic salt sodium tosylate (NaTos), were investigated by rheological measurements and freeze-fracture transmission electron microscopy at room temperature (298 K). As in some conventional ionic surfactant/salt aqueous systems, wormlike micelles and network structures could be formed in the C16mimBr/NaTos aqueous solutions, according to measurements of the zero-shear viscosity, the entanglement length, the average contour length, as well as application of the Cox-Merz empirical rule and Cole-Cole plots. FF-TEM images further confirmed that wormlike micelles were formed in these aqueous solutions. The wormlike micelles presented here would expand potential applications of ionic liquids in home care products, oilfield stimulation fluids, and nanobiotechnology.

摘要

在室温（298K）下，通过流变学测量和冷冻断裂透射电子显微镜研究了表面活性离子液体1-十六烷基-3-甲基咪唑溴化物（C16mimBr）在有机盐对甲苯磺酸钠（NaTos）存在下的水胶束溶液的生长和结构。与一些传统的离子表面活性剂/盐水体系一样，根据零剪切粘度、缠结长度、平均轮廓长度的测量以及Cox-Merz经验规则和Cole-Cole图的应用，在C16mimBr/NaTos水溶液中可以形成蠕虫状胶束和网络结构。FF-TEM图像进一步证实了在这些水溶液中形成了蠕虫状胶束。这里呈现的蠕虫状胶束将扩大离子液体在家庭护理产品、油田增产液和纳米生物技术中的潜在应用。